I need help with these questions from 8th Grade science, Specifically Chemistry. Answers should be detailed, 3-4 sentences.

List at least 3 different physical properties or changes of a substance.

List at least 3 different chemical properties or changes that a substance can experience.

EXPLAIN YOUR ANSWER! NO LINKS! PLEASE DON"T ANSWER JUST TO GET POINTS!
I will report your answer if you do any of those things.
Thx in advance!

Physical properties of a substance can include color, temperature, and mass. These are physical properties because they can be measured without changing a substance's chemical identity. Chemical properties of a substance can include flammability, acidity, and reactivity. These are chemical properties because they can be measured only by changing a substance's chemical identity.

it is to be noted that an alpha particle is an helium nucleus. so it contains 2 protons 2 neutrons and has a mass number of 4. when alpha decay particles are ejected from the nucleus it gets transformed into an atom which has atomic number less than 2 and a mass number less than 4.

an equation that could represent alpha decay is radium 226 decay of alpha particle forms radon 222.

→